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Finding the Fourth Proportional to 445,707.73, 668,490.16 and 142,062.43

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Solution

The fourth proportional to 445,707.73, 668,490.16 and 142,062.43 is: 213,070.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,707.73 : 668,490.16 = 142,062.43 : x
  2. Step 2: Convert to fraction form
    445,707.73/668,490.16 = 142,062.43/x
  3. Step 3: Cross multiply
    445,707.73x = 668,490.16 × 142,062.43
  4. Step 4: Simplify right side
    445,707.73x = 94,967,336,560.69
  5. Step 5: Solve for x
    x = 94,967,336,560.69/445,707.73
  6. Step 6: Final answer
    x = 213,070.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.